When trying to use the command below, the error message "An unexpected error occurred trying to execute that command" appears in chat.

data merge entity @e[nbt={RabbitType:99},limit=1] {DeathLootTable:"air"}

However, you can summon a rabbit entity with any DeathLootTable.

summon rabbit ~ ~ ~ {DeathLootTable:"air",RabbitType:99}

 
Tested in 1.20.6 and it works perfectly, so only the latest snapshot seems affected.